|
 placing custom symbol on chart |
| Posted by jef smit on May-23-2025 06:50 |
|
me again:
I have a chart I want to place a directional arrow in the upper right region (see file) and since it is only one point on the chart it still needs to be in a DoubleArray for AddScatterLayer(*) so I artificially created arrays for x and y of size 2 with duplicate values to get it to work like this:
double* xa = new double[2];
double* ya = new double[2];
xa[0] = 0.9;
xa[1] = 0.9;
ya[0]= 0.9 * max_sd_value; (from largest y value to keep it on graph)
ya[1] = ya[0];
int symbol[] = { Chart::ArrowShape(135, .7, .1, .5), Chart::ArrowShape(135, .7, .1, .5) };//add arrow to chart
const int symbolsize = (int)(sizeof(symbol) / sizeof(*symbol));
c->addScatterLayer(DoubleArray(xa, symbolsize), DoubleArray(ya, symbolsize), "", symbol[0], 30, 0xFF0000, -1);
Seems clunky and my inexperience showing here but wondered if there's a way without doublearray?
thanks,
jeff
|
| Re: placing custom symbol on chart |
| Posted by Peter Kwan on May-23-2025 11:54 |
|
Hi jef,
You may try:
double xa = 0.9;
double ya = 0.9 * max_sd_value;
c->addScatterLayer(DoubleArray(&xa, 1), DoubleArray(&ya, 1), "", Chart::ArrowShape(135, .7, .1, .5), 30, 0xFF0000, -1);
Best Regards
Peter Kwan |
|
Forum Home
Search
Message List
Post Message
(jef smit) 